Da Dao Du Xing: Die Long Bian

大道独行之蝶龙变

Luo Li has been trapped in the soulless Yinzhou Continent since he was a child and became the number one killer of Tianjue Killing Hall. His father, Master Ciyun, sacrificed himself to buy Luo Li a chance to escape from Yinzhou and go to Zhongtian Main World to find the true way to cultivate immortality. (Source: Bilibili, translated)